Chapter 8, Problem 112IAE

Interpretation Introduction

Interpretation:

Whether excited hydrogen atoms in the $2s^1$ excited state results in any efficient transitions of ${\text{He}}^{+}$ or not needs to be determined.

Concept introduction:

For most efficient transfer to take place, the excitation energy must match with the excited state energy in the atom which is unexcited.

The excited state energy of an atom can be calculated as follows:

$E_n=-13.6\frac{Z^2}{n^2}\text{ eV/atom}$

Here, Z is atomic number and n is principal quantum number.